<template>
    <div class="login-wrap">
        <div class="ms-login">
            <div class="ms-title">后台管理系统</div>
            <el-form
            :model="formdata"
            :rules="rules"
            ref="login"
            class="ms-content"
            label-width="0px"
            >
                <el-form-item prop="username">
                    <el-input v-model="formdata.username" placeholder="username">
                        <template #prepend>
                            <el-button>
                                <el-icon><user /></el-icon>
                            </el-button>
                        </template>
                    </el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input 
                    type="password" 
                    placeholder="password" 
                    v-model="formdata.password">
                        <template #prepend>
                            <el-button>
                                <el-icon><lock /></el-icon>
                            </el-button>
                        </template>
                    </el-input>
                </el-form-item>
                <!--  -->
                <div class="login-btn">
                    <el-button type="primary" @click="submitForm">登录</el-button>
                </div>
                <p class="login-tips">Tips : 用户名和密码随便填。</p>
            </el-form>
        </div>
    </div>
</template>
<script>
import {ref,reactive,onMounted,computed,watch} from "vue"
import { ElMessage } from 'element-plus'
import { useRouter,useRoute} from "vue-router";
import { useStore } from "vuex"
export default {
    name:"Login",
    
    setup(){
        // data
        let formdata = reactive({
            username:"admin",
            password:123456
        })
        // 路由的使用
        let router = useRouter() // 路由的实例
        let route = useRoute() // 路由的参数问题
        // vuex
        let store = useStore()

        let login = ref(null)
        let rules = reactive({
            username:[
                {
                    required: true,
                    message: "请输入用户名",
                    trigger: "blur",
                },
            ],
            password:[
                { required: true, message: "请输入密码", trigger: "blur" }
            ]
        })
        // methods
        function submitForm () {
            console.log(login)
            login.value.validate((valid)=>{
                console.log(valid) // true
                if(valid) { // 校验成功
                    ElMessage({
                      message:"登录成功",
                      type:"success",
                      onClose(){
                          // 跳转到首页
                        localStorage.setItem("ms_username",formdata.username)
                        router.push({path:"/home/123"})
                      }  
                    })
                }else{
                    ElMessage({
                        message:"登录失败",
                        type:"error"
                    })
                }
            })
        }
        // hook


        // computed

        // watch

        return {
            formdata,
            rules,
            login,
            submitForm
        }
    }
}
</script>
<style scoped lang="scss">
.login-wrap {
    position: relative;
    width: 100%;
    height: 100%;
    // background-image: url(../assets/img/login-bg.jpg);
    background-size: 100%;
}
.ms-title {
    width: 100%;
    line-height: 50px;
    text-align: center;
    font-size: 20px;
    color: #fff;
    border-bottom: 1px solid #ddd;
}
.ms-login {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 350px;
    margin: -190px 0 0 -175px;
    border-radius: 5px;
    // background: rgba(255, 255, 255, 0.3);
    background-color: #2d3a4b;
    overflow: hidden;
}
.ms-content {
    padding: 30px 30px;
}
.login-btn {
    text-align: center;
}
.login-btn button {
    width: 100%;
    height: 36px;
    margin-bottom: 10px;
}
.login-tips {
    font-size: 12px;
    line-height: 30px;
    color: #fff;
}
</style>